Molder



Jan. s, 1929.l

l.. T. MEQHOLDT MOLDER 'Filed May 22, 1925 6 -Sheets-Sheet l Jan. s, 1929. 1,698,412

1 r. MEDHOLDT l MOLDER Filed May 22. 1925 6 sheets-sheet 2 Jan. s, 1929. 411,698,412

` L. T. MEDHOLDT MULDER AFiled May 22, 1925 6 Sheets-Sheet 3 Jan. 8, 1929. 1,698,412

l.; T. MEDHOLDT HOLDER Filed May 22, 1925 6 Sheath-Sheet 4 :nimm umm mm Q33 my @A Jan. 8, 1929. 1,698,412

l L.. T. MEDHOLDT MOLDER I Filed May 22, 1925 6 Sheets-Sheet 5 76 gg 75 J2 M al, @1 i [le @91Hi|mlmxhq|1v ,I 3

' Jan. 8, 1929. 1,698,412

L. T. MEDHOLDT MOLDER Filed May 22, 1925 6 shets-sheet e Patented Jan. 3, i923.

UNITED STA-rss .rar

viinaciriiin .WORKEB OF ROCKFORD, ILLINOIS, A CORPORATION .GFILLINOI MOLDER.

Application iiled Mayr 22, 155125.l Serial No. 32,013.

an additional cut such for example las av rabloet groove inone edge of the work.

, More specifically stated, one ob3ect of .the invention is to 'provide in a melder or the 4 like a cutter mounted for movement into and Cil the appended claims.

out of engagement with the work in combination with means for automatically controlling the position of the cutter with iespect to the work so as to producea cut of a length` less than that of the work such as is commonly known in the art as a stop rabbet, stop chamfer, etc.

Still another `object is to provide an aux-v iliary cutter of the character stated in which the automatic controlling means thereforis governed solely by the work passing through the machine. i v

Another object of the invention is to provide in combination with the automatic controlling means, means for ejecting the iinished work from the machine so as to effect the restoration of the control elements tov their initial positions subject to engagement and operation by the succeeding piece of Work.

A general object of the invention is to produce a construction and arrangement for the auxiliary cutter and 'its control mechanism various changes may be made by thoseskilled in the art without departing from the spirit and scope of the invention as expressed in Figure 1 of the drawings is a fragmentary side elevational view of an auxiliary cutter vattachment embodying my invention applied to the rear end of a molder.

Fig. la is a plan view showing diagrammatically a melder of ordinary construction with the auxiliary cutter attachment.

Fig. 2 is a fragmentary transverse sectional view on an enlarged scale tal/:en approximately in the plane of line 2-2 of Fig. i.

F 3, 4 and 6 are respectively transverse sectional-views taken in the 3 3, 4 4 and 6-6 of Fig. l.l

Fig 5 is a fragmentary .planv view of the parts shown in 4. i

Fig. 5a isa fragmentary detail, plan view" sli owing the parts of Fig. 5.

Fig. 7 is a fragmentary plan view of the parts shown in Fig. 6.

Fig. 8 is a "vertical transverse .sectional view uilren'in the plane of line 8-8 of Fig. l and illustrating the means operating under the control of the-work for moving the auxiliary cutter. unit into Aoperative relation to he work.`

9 is afragmentary side view and Fig. 9L is a plan view of the means shown in Fig. 8.

Fig.V l0 is ay fragmentaryv transverse sectional viewtalen approximately in the plane of line lOflO of Fig. l and showing a counter-balancing means for the auxiliary cutter unit.

sur oi-Fica planes yof lines Fig. il is a fragmentary horizontal sec-dV tional viewkon an enlarged scaletaken approximately in the plane of line ll-ll ofl Fig. 2.

Figs. l2 to lvare fragmentary plan views diagrammatic in character illustrating the operation of the work ejector means.

Figs. 17 to 23 inclusive are fragmentary side views diagrammatic in character illustrating the operation of the several control devices employed to determine the position of the auxiliary cutter unit.

lVhile I do not intend to limit my invention to use for producing a rahbet groove in one edge of a piece of work, it is more especially adapted for ythis purpose and I will herein describe the attachment as it operates toperform this special function. y

The molder selected for purposes of illustration comprises a main frame l (F ig. la) lto the rear end of which is secured an auxiliary frame 2 providing an elongated table 3 supported upon uprights 4 inV continuation of the upper surface of the main frame l. The work is fed into the melder by suitable means including a pair of yfeed rolls 5 and 6,- and is guided by suitable guiding means avfirst beneath a top cutter head 7 thence successively into engagement with side cutter heads 8l and 9 and finally beneath the auxas tofproride for the iliary or groove-cutting unit generally designated by the numeral mounted for up and down movement Vabove one end of the elonV gated table 3 of the auxiliary frame `2. "1

`The auxiliary cutter `unit leomprises an `electric motorfll` upon the driving shaft of which,`at the bottom side Aof the motor,` is mounted a cutter head 12. i `13 is a supporting `frame (Figs. 2 and 11) extending transversely of the rear end ofthe melder bed and mounted atl opposite` ends for Vup and down adjustment in a pair of standards 14. ,Be i tween its ends the frame is constructed to `provide a pair of bracket arms 15 and 16 Which extend rearu'iardly in the form 'of a semi-circle, their free endsbeingconstructed to provide vertical Ways 17 and 18 in whichl slide guide `members 19 rigid with the oppo l site sideslof the motor casing A2o" `posite ends of the bracket linay be of any The means` for adjustably supporting opsuitable character, but preferably it is such synchronoi'is movement of both ends. Thus, referring to Figs. 2 and 11, it is herein shownas consisting oa pair.. ot blocks 201 `mounted(- n the `standards 14:` and having screw-threaded engagement with the Vscrews 21 journalled in the standards and each having at their upper.endsbeyeled pinions 22 meshinor with iinions 23 and 24 on a Y e i l Y transverse shaft 2 5 onegend of which is squared at 26 to receive an operating crank or Wrench. j The opposite ends of the frame are secured to the blocks 20` by means of bolts 2T entered through elongated slots 2S and 29 in the @rame member; and the latter' iseX- tended at one eud as shown in Fig. 11 and bent perpendicularly to provide a bearing 3() for an adj listing' screw 31operatively enat a prei'lotei'mined point fin Athe travel of `the 'work into operative engagement theregaging with the blofclr 20 so as t be capable'ot nioring the frame transversely when the bolts 2T are loosened; rIhe standard `111 through wbichtlie screr.T 31 passes is `slotted as shown in dotted lines at 32 in Fig'. 11 toperniit of the up anddoiyn-adjustment of theframe.

li'leans "is provided 'for normally supportin;y the auxiliary cutter unit 10 inelevated "position aliove the Work as it passesfroin the melder proper onto the'table''l of the ggroove cutting attachment and th is means is arranged to he controlled by` the `Work to eli'ect the losco/lit oi. the auxiliary cutter unit with] so :is to performvthe desired auxiliary cutting operation onthe Work. MT his means comprises a rock' sliafftf which isv mounted :i.t one edge of and'extends longitudinally alongthe tablet ofthe `auxiliary frame 2,

suitable brackets. 34:, B4 and 35 being se- Y cured' to the table as "by means of bolts 36 haringheads o erating inV an undercutor T-shaped slot formed iii the table. This rock sha-ft 33 has rigid with itsforwardend an arm ipivotally connected by an adjustablelinli with one of pair arms l0 (if 2-and 11) mounted at opposite ends bi1 astud shaft 41 journalled in the frame 13 to turnon a horizontal aXis extending longitudinally ofthe table @the frame being .GQ11- strufcted toprovidefor th s purpose an elongated bearing 12"at opposite" ends et which the arms 4() are located.

Said arms 40 extend to a point substantially centrally of the driving motor 11 and are pivotally connected to the motor casing byV ineensV of linlrs 43 the latter `being 'pivotally inountedon opposite'sides ofthe motoroasing through the medium ofpiyot studs'tt. l To limit the descent of the motor and hence de#` termine the operative 'position of Vthe cutter head12, one of the studs 44 is arranged to entera notch or recess 15 (Fig.10)1in the screw 44D adjustably secured in a suit-ableflugJ on the frame and.A locked `by a nut 44h. To? i assist the control mechanism operated bythe l Work to raisethe cutter heada counterbalano ing` spring ele provided afctin'gbetween a thimble 1-4 slidable on a reduced upper por. tion oit the'serew 441:1 andi'a nut 44d carried by the lower end ofthe screw` `The. spring, :it will be understoodfis so tensione'd aste couneii iframe until it strikesthe upper end-of a stop u f S5 terhalance `only partially the Weight the j auxiliary cutter unit,.in` orderrto permit the descent thereof by gravity when released by the control mechanism to be'noiy described.

Near the rear end of the rock shaft 33 Where it passes through its supporting bracket 35, rigidly secured a bearing` bracket l5 (Figs.

"4,-, and 51) carrying an interruptedindex.

g roll. 4,6 constituting an arcuate control eloment; l Said-interrupted roll is n'iounted `to turn on a pivot in the bracket .t-he latter beingU-shapedin form With its arms "entered between upstanding bearing'portions 4'1" on the bracket i The pivotal stud for the roll is mounted in an upright portion 416 of the Ushaped bracket memberj and means in cluding an adjusting screw f1.8 may be pro# vided for adjusting a bearing box Yfor the pivi otal stud in said upright portion to Vary the position of the roll with respect to the table El.

Referring now to Figs.` 1 and 2, it will be apparent `that`the'movement ot' a piece of wort beneath the interrupted roll i6 will rock the shaft in a counterciockwise direction (li in: 2) with the result that an upward lifting force will be applied ,to the, arms 11) and'to the auxiliary cutter: unit l0. through the medium oi ytlieflinls 4th thus elevating lOl) Ithe unitand its cutterliead 12 relatire to the f table 3. Y i

I have y 53 at its rear end adapted to engage with a latch member 511 of an arm 55 Vdrawn by a contractile spring 56finto a position above the plate 53. The arm is mounted to turn on a i pivot 57 carried by a rearwardly extending arm 58 on the bracket 3@ for the shaft Thus it will be seen that the inoven'ient of a piece of work beneath the interrupted roll 46 at the rear end `of the table 3 will operate to rock the shaft 33 so as to elevate the aux- Ailiar7 cutter unit 10 and the latch 53-5i will automatically operate to hold the saidl 59 mounted to turn on one end of an arm 60 Y which in turn is rigid with a U-shaped bracket 61 (Fig. 9a) loose on the shaft 33 and having an upwardly and rearwardly extending arm 62 carrying a. roller 63. The arm 55 carrying the latch member 54 has a rounded nose 6-1 at its upper end (Fig. 8)' adapted to be engaged by the roller 63. Hence when the. work passes beneath. the interrupted roll 5f), it swings the bracket 61 and the arm 62 so that the roller 63 forces the arm 55 rearwardly carrying the latch member 54C out of engage-- ment with the plate 53 on the arm 52 and thus allowing the shaft 33 to rotate in a clockwise direction under the weight of the auxiliary cutter unit operatively connected thereto.

The arm 6() is mounted as best shown in Figs. 9 and 9d upon the two arms of the bracket 61k so as to be adjustable thereon to vary the height of the roll 59 relativ-e to the table 3. In the present instance the said arm is mounted on a stud 65 carried by the forward end of the b acket arm 62, and the rear end of the arm 6() is slotted as at 66 to receive a stud 67 having a nut v63 thereon whereby the said arm 60 may be clamped in any desired position of adj ustment. To limit the downward swinging u'iovement of the roll 59 and to determine the position of the latch oj erating roller 63, a stop screw may be provit'led in the bearing bracket 3 1; which screw adapted to engage a t'lepeuding flange 70 rigid `with the bracket 6l.

The :'lrrangement en'iployed, it will be ob lserved. is such that the indexing` roll 59 normalljv occupies a position such that it is spaced from the top of the table 3 a distance substantially less than the thickness of the work passing through the machine, and when the roll f6 is in its operative position Vit is similarly placed. `Consequently when the work rides beneath the first indexing roll 59 it is elevated by the work sufficiently to disengage the latch 53-,54 to permit the descent of the auxiliary cutter unit; land when the work engages with the second indexing roll L1-6 (this roll having moved into operative position with the descent of the auxiliary` cutter unit) the shaft 33 is rocked to cause a re-engagement of the latch 53-54s After the rolls lare thus elevated by the work they f ride upon the upper surface thereof and before they can returnto their normal positions, (the groove cutting operation havingr been completed) the work must be ejected from the table. I provide therefore means including a pair of members 71 and 91, located at spaced points along the table, for ej ecting the work upon the completion of the final cutting operation to enable the restoration of the indexing rolls to their normal positions in which they are susceptible to operation by the succeeding piece of work for the automatic controll of the auxiliary cutter unit.

Referring to Figs. 6 and 7 ,f the ejector member 71 is substantially triangular in form,

slidable transversely of thetable 3 near one yedge thereof and secured at its outer edge on a rod 72extending parallel to the shaft 33 a short distance below it. The inner edge of the member throughout t-he greater vportion of its length isk arranged.'diagonally relative to the path of travel of the work as shownfat 73, and said edge terminates in a flat surface 7 4 parallel with the line of movementof the work. Normally the member is interposed in the path of travel of the work, the leading end of which, engaging with the diagonal surface 73 moves the member outwardly transversely of the table` The rod 72 is mounted for swinging movement to permit of such lateral motion of the ejector member; Thus it is carried .by the upper ends of a pair of me1nbers 7 5 and 76', one of which is in the form of a frame mounted to turn on a rod7 7 'suitably supported in the auxiliary frame 2 below thetable 3, and the other of which is in the form of an arm also mounted on said rod 77, the two members being'spaced apart longitudinally of the table as shown in Fig. 1.

The movement of the ejector member 71 by thev work takes place against the action of a spring 7,8 (Fig. 3) oneend of which is anchored to one of the frame members Lat 79.

The other end of the spring is secured to the upper end of a. rod carried by a bracket 81 fast on the shaft 77 with which the m e mbers 75 and 76 are rigidly secured.

`Associated with the ejector member 71 is a latch device also actuated by the work in its travel longitudinally of the table 3. This device (Fig. 7) comprises an arm 82pivoted at A light contractitle spring 86 serves to, hold,

the arm 82 in such normal position'and it will be observed that in this position the plate 85 1 has eqn inwardly'projecting lip 'portion18T` .y 4which is edeptedto be engaged by the leading ehd ofthe Work itpeeses the ejector niember 71. VVbeii thus engaged by tee Work, the

erm `82is swung tlirougbl the proof alcirele end in such movement the arm togetherwitlr the member Se operates es e toggle, tbe parte of which when straightened cerise the Vrod 72 y to swinooutwerdl ewa from the table ceri l b l rying Witbit the ejector member 7l. Upon u the undereide of the letter ie en edjeeteble latch member in the form of e block `which `is so positioned that eetbe menjiber, Il moves outwardly underftbe `actrm oliseid toggle it engages with tbe outer edge oftlietable es shown 1n dotted linee 111i Fig. 6, esito lock the eotolr member in e position spaced e short distance vfrom tlieswerk (eeeFig`lll) tbe work tre-vele on irrite morementtowa-r d the end of the table the 211111,82 travels With it, and ul- `tlrnately the `free end oi the arm disengeges `frornlrtlie end of tbe work and Slides along tbe Y nisrn (Figs. l and 3) bis;l herein shown es com l lprlslng an interrupted roll 89 adwstebly y mountedthrougb the medium of L slotted bei" b90 oneA member 91 rigid `with the rod 72 ettlie `upper epd of the erm `76. This `member 91 y constitutes tbe other ejector member liereiiibefore referred to. Thee7 being mounted on `the shaft 72 with tbememberl, it merce therewith and when :tbe Worlcengeges tbe roll 89 `to rock` the shaft 72, the letcli bleek 855 sdlsengalged from tlieedge of tbeteble end both members 71 and 91 are rapidly liiovedinvWerdly under the action of the spring *i9 so ae to strike the VWork e sharp blow eufielent to remore it forcibly from tbe teble transversely thereof. rlliereupori tbe `rollsr59 and. 89, be-

v work..

c small md bei;

ing unsupported ageirst the action of gravity,

may descend into their normelpoeitione with respect to the ripper surface ot tbe table eed in tbe path .olI mosfementof tbe sgueeeedi "of Work. The roll 4G, however, is beld by tbe latch 5S-#54; igmtl tbe latter ie released v l `by the engagement Vof tlieworl with tberoll 59.. .y l 3 K y The rolls'fl-(, 59 and 991 it will beobfeierr :ire com? Hotell, to referido arrivi@ bearing;

y ddii el slib, 'o that tbe degree of our c y ce welll ed eped il o by the eberp or Square cornered en Tblie ee eliorfiiirlf y I provider; cmueurreee r-:bim when d; iii'thepelli el? `more git el? tbe rf.f residfy ricleupw thereon into tbe positions Shown iii Ffibc y to 23, md tl le riding up on tlieworla; will elee en upward t y moyienient oi the desired extenttortlle Aportic- `oler `Control element governedthereby."` The `fmeiee boriliel operetiye position when perdo so by tbe absence or e piece oi` beneath the rollearld preferably tbe rolle ee end 59 here the foremost portions ced in mese so that euch `eed portiere .ce nelly/' ere-ra. ed ellglitly above' the roer erde* ol" emrleegmentel portions.

ee Work le fed :fue et belle; tlieric' between .m e o ollows z 3p cliltterlieelfl f7 21nd uid ewipe prelimieery tothe libel operei tofbe `pej torliied by tbeclitter lieedll. much ee the succ ive pieceri; oi4 Werl:-

i .raitee to move the i tbe reeelime regard rior-lz erxtlrr n lere el" tbesleir eide oit tbe Wollt tbe etoel; eeyurniebedbzww; 'eneemootli or lieielied side. In ite pestbrougjli 'lle iiiolder proper tbe Werl: is 1L by the usuel guiding meme and such f contiene `to 'function te bold tien duririoi the operation of be anxiliery cutter unit l0 elevated ind roll 59 l.'

- .ld with rege rd to the length ol' to be cut, tbele y 1g end oi" the i fke. 'ell :Sorel rf tlie seme eiwit in. wliy e f i eut tbe 'loi`- merges tbe roll ,116

A up on the e bracket 'fl arid `*earth it tbe roellr i 3com lzercloclnyiee dlreeti ie milrillery cutter mii-.t l0 threes `tbe medium tbe `lierre ge connecting it with tbe eliaitlllg, 2), At tbe seme time they.

*mi of tbe greater messetonethe melder leed rolle y e cutter beside 9 :md 9 Y to limeb md reduce the Werl; to tlie propel be rgorl-z. i The machine f e not embody the usuel x icing' tbe under llt tlie werte of tbe O'roove cuttino i l l D i c: 7, ne; the bracket (il (Eloy l (rre. ee),

oit tbe segmental port-ione 92 out away as et 93 bld relejtioxr1 the et occupy tbe relation shown in Fig. i

` Vered eo as to 1 pelli of travel of tbe 1 1 L *e ol. tee .red-enne rolls, oa ly of the table 2l, Mering rm 52 which is latch arm 52 is swung downwardly to permit the lever 55 to swing forwardly under the aetion of the spring 56 and thus effect the re-engagement of the latch S8-541. In the upward movement of the auxiliary cutter unit, the cutter head 12 moves into the position shown in Fig. 21 and thus vthe groove cutting operation is discontinued.

Prior to the engagement of the work with the second indexing roll a6, however, it engages with the inclined surface 73 of the ej ector member 71 (Figs. 7, 12 and 13) in the operation of setting or cooking the latter preliminary to the final ejecting operation. In passing from the inclined surface 73 the end of the work engages with the notched end of the arm 82 andV the continued movement of the work ca uses this arm to move into perpendicular relation to the path of travel of the work in which it operates upon the rod 72 carrying the member 78 to move the latter a short distance away from the near edge of the work. At the same time the auxiliary ejector member 91 is similarly moved to one side of the path of movement of the work. f Such movement of the rod or shaft 72 takesv place against the action of the spring 78 (Fig. 3), and in the final portion of the movement effected by the arn1'82 the latch block 88 Von the under side of the member 73 moves into holding engagement with the edge of the tablel Subsequently' the arm 82 idles along the edge ofthe work as shown in Figs. 15 and 16.

Upon the completion of the groove cutting operation and the elevation of the auxiliary cutter unit, the leading end of the work passes into engagementwith the interrupted roll 89 of the means for tripping the work ejector means. In this operation the roll 89 is elevated (Figs. 22 and 28) and the shaft 2 rocked in a counterclockwise direction to lift the latch block 88 free of engagementV with the table thus releasing the spring 78 to action. The result. is that the members 71 and 91 are caused to strike the work a sharp blow near each end, and thus forcibly remove it from beneath the several rolls. Thereupon the latter automatically assume the positions shown in Figs. 17 and 18, ready for a repettion of the operation.

It will be observedthat the entire operation upon the work including the formation of the rabbet groove or other type of cut is performed in one passage of the work through the machine. Heretofore, so far as I am aware, the operation of producing a stop rabbet or similar cut of a length less than that of the stock has required either a separate passa-ge and hence handling of the work, or the use of a template on each piece of stock for controlling the position of the cutter; and I believe that'I am the first to have produced an auxiliary cutter means controlled by the work itself as it passes from the molder or fthe like to accomplish this de-v sired result. y The ejectionl of the work from the machine serves, it will be appa-rent, they important function kof allowing the controllmgelements to return to operative position without in any way interrupting the feeding operation or preventing the work Ament of the work through the machine, and

ejector' means having a holding device releasable by the work upon the completion of the auxiliary cutting operation on a piece of work to permit said ejector' lmeans to'impa-rt a movement thereto independent of the working feed.

2. The combination of a molder having means for feeding the work, means for cutting a rabbct groove in one edge of the work including a cutter mounted for 'Ymovement into and out of engagement with the work, means for automatically effecting the movement of the cutter Vinto and out of engagement with the work at predetermined points in its length, the last mentioned means including a plurality of control elements arranged to bey operated successively by the work in its movement, and .means for imparting a movement to the finished work independent of the normal feeding movement for moving' the work out of operative association with'said control elements.

8; An auxiliary cutting means for molders or the like comprising, in combination, a table, a Vcutter' mounted for movement toward and from said table, and a pair of indexing devices spaced longitudinally of the table and respectively operating to effect the movement of the cutter into and out of engagement with the work on the table, said devices including movably mounted shoes for contacting the work arranged when disengaged from the Vwork automaticallj7 to assume vtheir normal positions.

11. An auxiliary cutting means formolders or the like comprising, in combination, atable, a cutter mounted for movement toward and from said table, a pair of indexing devices spaced longitudinally of the `table and respectively operating to effect themovement' of the cutter into and out of engagement with the'worlfon the table, said1 indexing devices being arranged to be operatedby the work and being automatically returnable to normal position upon disengagement from the work, and ejector means for disengaging the work from said devices including a trip 'SO i device arranged toelect theV operation of the' ejector meant at a. predetermined point in the travel ofthe worli.

An auxiliary cutting attachment for :n'ioldereand the like comprising,` in combina` tion with a critter mounted for movement into "and ont ot operative relation to the work, a

parrot indexing devices ing at predetermined pointe in the travel 'ot respectively operatftheavorltto eil'ectj the. moven'ient ol the critter intoandiont et engageijnent with the work,

and springactuated means releaeable subseing ld quently to the movement o" second index; p xvice to eject the work bya movement other than thonormal leerlingmovement and therebyplace aaidindefring devices in condition lor controlline;` the cutter iter operation f l. upon a Succeeding Work piece.`

An auxiliary cutting means` iformold` ers and the like com prieing7 in combination, i "a table, an upright iframe at one end ot the p' table,` a cutterhead meant-ed for up and down niovementin Said trame, a rock shalt parallel to the table, a latch devicenormally operating to hold said rock Shaft against rotation and i thereby to maintain said cutter head in elen vated position, a control element operating at a predetermined point inthe travel oi' the Work to release said latch device to permit the deecent of the cutter head into engagement Withthe yWorkj and a secondcontrolelement operating at another point in the travel of the Work to elevate the cutter head out oi engage- Y ment. with the Work, said latch device operatlngvto rock said shaft in a direction 'to elevate Y the cutter head to holdlitin inoperative 'position. i y i y i'. The combination ol" a table, a trame at one end ot the table, a cutter head mounted tor upand down movement in said traine, means for controlling the position ortho cnt-` ter head relative tothe table comprising a rock` shaft. extendingparallel `to y the table, means arranged to be moved byapieceot Werl: in its paeaage over the table to rock said shaft :in a directionto raiee said cutter head to itsl inoperative poeition,` an arm rigid with said elia-tt, a. latch member adapted te enga with eaid arm when `the cutter head is 'r ieed whereby vto hold thehead inelevated position, and ae'ontrol device arranged. te be moved by the Work-in ite paeaagealong the table to d is` engage said latch member from said arm.

`8. Thecoinbination ot a. worlr table, a eut- ;ter head mounted 'or up and down movement relative to saidtable, a rock shaft operatively connected with Said cutter head to move itjan arm tast on said shaft, anlatcli member nor-V mally, engaging with said arm to hold Said shalt against rotation and `thereby hold the cutter head in elevated positioin and a control element arranged to be moved by the Work as itipasses along `the table to dieengage Said latch member from Said arm to permit the by the vverkas it `passes along the table to engage Said latch member iroin `said arni,` said control element ceniprieinga inemlier free to i turn on said allait, apart carried byfsaid member adapted to be engaged by thenvork, and a eecondpart carried byeaid member and adapted toengage said latch member.'

lOJTlie combination ci? a table, a cutter head" mounted iorimovement toward and from said table, a rock Shaft operatively coni'iectedwith said cutter head to move it, a

member rigid with Said rock shaft and arranged. to" be moved by the Workin ite travel along the table 1n a direction to etiect the elevation otvead cutter' heachand a latch device operable automatically in such rotation of the roch shaijt to lock the Same againstmovement in a direction to permit the descent of the cut ter head. i

lljhThe combination of a table, a cutter head mounted for movement into and out of operative engagement with a piece o'ivvorli A moving along the table, meansv oper able'by the vvork and inthe movement ot the Work at predetermined points in its travel to eii'cct tiret the descent oit the cutter headinto engagement with the Vivorkand then the with# draival of the cutter headirom thevv'orl to l its inoperative position, and means for mov` ing 'the Work out oi'` relation to saidjcontrol elemente comprisi ejector movable in the travel et `the Worlt` into a position at oneeide' ot'the `work, a spring tendingA to move Said ejector toward the Worlr.l a latch operating to holdfsaid ejector against movement by the ern-ing, and a trip'devico operable by the Work :tor releasing said 'latch at a predeterniiined peint in the travel `oit the work.

ln a machine ofthe character deecrilmd5KV the combination ot a table, a cutter Vhead,

`meanaarranged Vto'be operated by the VWork and in the movement ofthe vvorli along the Vtable to govern the position or the cutter head relative to the table and the Work there-` on, aaidlmeane including control element arotfthe work, an ejectormember 'iounted i'or movement laterally oi" the path oi travel or the Work; a spring normallyltending to move theiejector member tovvard the xvo-rlr, means operable by the Work init/S travel to move `rangedto `beoperated, by the fadvi'znce endi v said ejector member into cocked position at one side ofthe work, anda trip mechanism` operating at a predetermined point in the travel of the work to release said ej ectoil member for movement kby said spring. f

13. The combination of a work table, cut ter means arranged ,tof operate upon work moving along thetalble in abutting end rela.- tion, cont-rol mechanism for the cutter, means for determining the lposition of the cutter relative tothe work, a rock shaftextending parallel to the table, an ejector member overlying the tablelV and mounted on said shaft, said 'shaft being mounted for lateral motion relative to the table, means tending to move said shaft in a direction to carry the ejector member toward the work, a latch operating to hold said ejector member away from the work, and a. trip device forrocking sai-d shaft Y whereby to release said latch.

14. The combination of a work table, cutter means arranged to operateupon work- `moving along the table, control mechanism y for the cutter, means for determining the position of the cutter Irelative to the work,a rock shaft extending parallel to the table, an ejector member overlying the table and mounted on said shaft, said shaft being mounted for lateral motion relative to the table, means tending to move said shaftin a direction to carry the ejector member toward the work, a lat-ch 'operating to hold said ejector member away from the work, and a trip device for rocking said shaft whereby to release said latch, the means tor moving the ejector member away from the work including an'arm pivotally secured to said rock shaft soas to turn on a vertical axis and arranged to be engaged by the work in its travel for movement from lan oblique position with relation to the path of travel of the work into a position perpendicul lar to said path of trave 15. In a machine of the character described the combination ot a work table, cutter means. control mechanism for the cutter means, and means for moving the work relative to said control mechanism including a transversely movable ejector member having a diagonally disposed surface arranged to be engaged by the work so as to be moved thereby transversely of the table, an arm mounted in pivotalrelation to said member and also adapte ed to be engaged by the work, spring means for tending to move said member toward the work, t-lie arrangement being such that in the swinging movement of said arm ,thev

ejector member is moved free of the work, means for releasably holding the ejector member in the last mentioned relation to the work,

and, means operating at a. predetermined point in the travel of the work to release said holding means. I

1 6. In a machine of the character described the combination of a. table, cutter means movable into and out of operativeassociation with a piece of work intermediate its ends while travelling along the table and means cont-rolled by the work in its movement along the table ior governing the posit-ion of said cutter means during the passage of the Work, said means including a plurality of control deviceseacli having an interrupted'roll element arranged to `be engaged by the work for movement thereby and adapted upon being Y disengaged from the work to return to their normal positions. l Y 17. Ink a machine of the character described the combination of a table, a cutter head, a l

supporting iframe for the cutter head, means ttor adjusting the trame vertically with respect to the table, said critter head *being mounted :for up and down movement inl said frame, and means ior automatically controlling-.the movement of said cutter head in said traine whereby to determine its position rela- 19. In a machine ot the character described the combination ot a work support, cutting means movable into and out of operative engagement with work iced onto said support in v abut-ting end relation, means tor controlling the movement oi? the cutter-means arranged to be 'engaged by the leading end of a piece of work in its travel, and means for moving each piecel of work to expose the end of the next succeeding piece of work so that it may 'engage said controlling means( 20.. In a machine oiu the character described a cutter, means for feeding pieces of work in end to end relation relative to said cutter control means including a device operable upon l engagement by the leading end ot a piece of work for effecting the operation of said cutter thereon, and means operating upon eachk piece oi work to expose the end of an adjacent piece otwoi'k so that it may engagesaid device.

21. In ainachine of the character described a cutter operable successively upon separate pieces of work fed in end to end relation, control means for the cutter including a device operable by relative movement between it and the Work, and means `tor moving each piece of work relative to the other pieces of work to render the control device operative.l In testimony whereof, I have hereunto at.

iixed my signature. V

LOUIS T. MEDHOLDT. 

